package com.shiro.config;

import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.LinkedHashMap;
import java.util.Map;

@Configuration
public class ShiroConfig {

    //ShiroFilterFactoryBean
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager defaultWebSecurityManager){
        ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
        //设置安全管理器
        bean.setSecurityManager(defaultWebSecurityManager);
        //添加shiro 的内置过滤器
        /*
            anon:无需认证就可以访向
            authc: 必续认证了才能让问
            user: 必须拥有记住我功能才能用
            perms: 拥有对某个资源的权限才能访问
            role: 拥有某个角色权限才能访问


            设置某一个页面需要权限
            filterMap.put("/user/add","authc");
            filterMap.put("/user/update","authc");
         */
        //登录拦截
        Map<String, String> filterMap =new LinkedHashMap<>();

        //授权,正常情况下，未授权会跳转到未授权页面  ！！！注意顺序
        filterMap.put("/user/add","perms[user:add]");
        filterMap.put("/user/update","perms[user:update]");

        filterMap.put("/user/**","authc");
        bean.setFilterChainDefinitionMap(filterMap);

        //设置登录请求
        bean.setLoginUrl("/tologin");
        //设置未授权页面
        bean.setUnauthorizedUrl("/noauth" );

        return bean;
    }

    //DefaultWebSecurityManager
    @Bean(name = "securityManager")
    public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm){
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        //关联realm
        securityManager.setRealm(userRealm);
        return securityManager;
    }
    //创建 realm 对象 ,需要自定义
    @Bean(name = "userRealm")
    public UserRealm userRealm(){
        return new UserRealm();
    }

}
